@book{35834,
	author = {Posamentier, Alfred S. and Hauptman, Herbert A.},
	title = {101+ great ideas for introducing key concepts in mathematics :},
	publisher = {Corwin Press,},
	year = {c2006},
	address = {Thousand Oaks, Calif. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip068/2006004613.html}
}